sna_display_fake.c revision fe8aea9e 
1/*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *	Chris Wilson <chris@chris-wilson.co.uk>
25 *
26 */
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include "sna.h"
33
34static bool add_fake_output(struct sna *sna, bool late);
35
36static void
37sna_crtc_dpms(xf86CrtcPtr crtc, int mode)
38{
39}
40
41static char *outputs_for_crtc(xf86CrtcPtr crtc, char *outputs, int max)
42{
43	xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(crtc->scrn);
44	int len, i;
45
46	for (i = len = 0; i < config->num_output; i++) {
47		xf86OutputPtr output = config->output[i];
48
49		if (output->crtc != crtc)
50			continue;
51
52		len += snprintf(outputs+len, max-len, "%s, ", output->name);
53	}
54	assert(len >= 2);
55	outputs[len-2] = '\0';
56
57	return outputs;
58}
59
60static const char *rotation_to_str(Rotation rotation)
61{
62	switch (rotation & RR_Rotate_All) {
63	case 0:
64	case RR_Rotate_0: return "normal";
65	case RR_Rotate_90: return "left";
66	case RR_Rotate_180: return "inverted";
67	case RR_Rotate_270: return "right";
68	default: return "unknown";
69	}
70}
71
72static const char *reflection_to_str(Rotation rotation)
73{
74	switch (rotation & RR_Reflect_All) {
75	case 0: return "none";
76	case RR_Reflect_X: return "X axis";
77	case RR_Reflect_Y: return "Y axis";
78	case RR_Reflect_X | RR_Reflect_Y: return "X and Y axes";
79	default: return "invalid";
80	}
81}
82
83static Bool
84sna_crtc_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
85			Rotation rotation, int x, int y)
86{
87	char outputs[256];
88
89	xf86DrvMsg(crtc->scrn->scrnIndex, X_INFO,
90		   "switch to mode %dx%d on %s, position (%d, %d), rotation %s, reflection %s\n",
91		   mode->HDisplay, mode->VDisplay,
92		   outputs_for_crtc(crtc, outputs, sizeof(outputs)),
93		   x, y, rotation_to_str(rotation), reflection_to_str(rotation));
94
95	return TRUE;
96}
97
98static void
99sna_crtc_destroy(xf86CrtcPtr crtc)
100{
101}
102
103static const xf86CrtcFuncsRec sna_crtc_funcs = {
104	.dpms = sna_crtc_dpms,
105	.set_mode_major = sna_crtc_set_mode_major,
106	.destroy = sna_crtc_destroy,
107};
108
109static void
110sna_output_create_resources(xf86OutputPtr output)
111{
112}
113
114static Bool
115sna_output_set_property(xf86OutputPtr output, Atom property,
116			    RRPropertyValuePtr value)
117{
118	return TRUE;
119}
120
121static Bool
122sna_output_get_property(xf86OutputPtr output, Atom property)
123{
124	return FALSE;
125}
126
127static void
128sna_output_dpms(xf86OutputPtr output, int dpms)
129{
130}
131
132static xf86OutputStatus
133sna_output_detect(xf86OutputPtr output)
134{
135	DBG(("%s(%s) has user modes? %d\n",
136	     __FUNCTION__, output->name,
137	     output->randr_output && output->randr_output->numUserModes));
138
139	if (output->randr_output && output->randr_output->numUserModes) {
140		xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(output->scrn);
141
142		if (xf86_config->output[xf86_config->num_output-1] == output)
143			add_fake_output(to_sna(output->scrn), true);
144
145		return XF86OutputStatusConnected;
146	}
147
148	return XF86OutputStatusDisconnected;
149}
150
151static Bool
152sna_output_mode_valid(xf86OutputPtr output, DisplayModePtr mode)
153{
154	if (mode->type & M_T_DEFAULT)
155		return MODE_BAD;
156
157	return MODE_OK;
158}
159
160static DisplayModePtr
161sna_output_get_modes(xf86OutputPtr output)
162{
163	return NULL;
164}
165
166static void
167sna_output_destroy(xf86OutputPtr output)
168{
169}
170
171static const xf86OutputFuncsRec sna_output_funcs = {
172	.create_resources = sna_output_create_resources,
173#ifdef RANDR_12_INTERFACE
174	.set_property = sna_output_set_property,
175	.get_property = sna_output_get_property,
176#endif
177	.dpms = sna_output_dpms,
178	.detect = sna_output_detect,
179	.mode_valid = sna_output_mode_valid,
180
181	.get_modes = sna_output_get_modes,
182	.destroy = sna_output_destroy
183};
184
185static Bool
186sna_mode_resize(ScrnInfoPtr scrn, int width, int height)
187{
188	ScreenPtr screen = xf86ScrnToScreen(scrn);
189	PixmapPtr new_front;
190
191	DBG(("%s (%d, %d) -> (%d, %d)\n", __FUNCTION__,
192	     scrn->virtualX, scrn->virtualY,
193	     width, height));
194
195	if (scrn->virtualX == width && scrn->virtualY == height)
196		return TRUE;
197
198	assert(to_sna_from_screen(screen)->front);
199	assert(screen->GetScreenPixmap(screen) == to_sna_from_screen(screen)->front);
200
201	DBG(("%s: creating new framebuffer %dx%d\n",
202	     __FUNCTION__, width, height));
203
204	new_front = screen->CreatePixmap(screen,
205					 width, height, scrn->depth,
206					 0);
207	if (!new_front)
208		return FALSE;
209
210	scrn->virtualX = width;
211	scrn->virtualY = height;
212	scrn->displayWidth = width;
213
214	screen->SetScreenPixmap(new_front);
215	assert(screen->GetScreenPixmap(screen) == new_front);
216	assert(to_sna_from_screen(screen)->front == new_front);
217
218	screen->DestroyPixmap(new_front);
219
220	return TRUE;
221}
222
223static const xf86CrtcConfigFuncsRec sna_mode_funcs = {
224	sna_mode_resize
225};
226
227static bool add_fake_output(struct sna *sna, bool late)
228{
229	ScrnInfoPtr scrn = sna->scrn;
230	xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
231	xf86OutputPtr output;
232	xf86CrtcPtr crtc;
233	RROutputPtr clones[32];
234	RRCrtcPtr crtcs[32];
235	char buf[80];
236	int i, len;
237
238	if (sna->mode.num_fake >= 32)
239		return false;
240
241	DBG(("%s(late=%d, num_fake=%d)\n", __FUNCTION__, late, sna->mode.num_fake+1));
242
243	crtc = xf86CrtcCreate(scrn, &sna_crtc_funcs);
244	if (crtc == NULL)
245		return false;
246
247	len = sprintf(buf, "VIRTUAL%d", sna->mode.num_fake+1);
248	output = xf86OutputCreate(scrn, &sna_output_funcs, buf);
249	if (!output) {
250		xf86CrtcDestroy(crtc);
251		return false;
252	}
253
254	output->mm_width = 0;
255	output->mm_height = 0;
256	output->interlaceAllowed = FALSE;
257	output->subpixel_order = SubPixelNone;
258	output->status = XF86OutputStatusDisconnected;
259
260	output->possible_crtcs = ~((1 << sna->mode.num_real_crtc) - 1);
261	output->possible_clones = ~((1 << sna->mode.num_real_output) - 1);
262
263	if (late) {
264		ScreenPtr screen = xf86ScrnToScreen(scrn);
265
266		crtc->randr_crtc = RRCrtcCreate(screen, crtc);
267		output->randr_output = RROutputCreate(screen, buf, len, output);
268		if (crtc->randr_crtc == NULL || output->randr_output == NULL) {
269			xf86OutputDestroy(output);
270			xf86CrtcDestroy(crtc);
271			return false;
272		}
273
274		RRPostPendingProperties(output->randr_output);
275
276		for (i = sna->mode.num_real_output; i < xf86_config->num_output; i++)
277			clones[i - sna->mode.num_real_output] = xf86_config->output[i]->randr_output;
278		assert(i - sna->mode.num_real_output == sna->mode.num_fake + 1);
279
280		for (i = sna->mode.num_real_crtc; i < xf86_config->num_crtc; i++)
281			crtcs[i - sna->mode.num_real_crtc] = xf86_config->crtc[i]->randr_crtc;
282		assert(i - sna->mode.num_real_crtc == sna->mode.num_fake + 1);
283
284		for (i = sna->mode.num_real_output; i < xf86_config->num_output; i++) {
285			RROutputPtr rr_output = xf86_config->output[i]->randr_output;
286
287			if (!RROutputSetCrtcs(rr_output, crtcs, sna->mode.num_fake + 1) ||
288			    !RROutputSetClones(rr_output, clones, sna->mode.num_fake + 1))
289				goto err;
290		}
291
292		RRCrtcSetRotations(crtc->randr_crtc,
293				   RR_Rotate_All | RR_Reflect_All);
294		if (!RRCrtcGammaSetSize(crtc->randr_crtc, 256))
295			goto err;
296	}
297
298	sna->mode.num_fake++;
299	xf86DrvMsg(scrn->scrnIndex, X_INFO,
300		   "Enabled output %s\n",
301		   output->name);
302	return true;
303
304err:
305	for (i = 0; i < xf86_config->num_output; i++) {
306		output = xf86_config->output[i];
307		if (output->driver_private)
308			continue;
309
310		xf86OutputDestroy(output);
311		i--;
312	}
313
314	for (i = 0; i < xf86_config->num_crtc; i++) {
315		crtc = xf86_config->crtc[i];
316		if (crtc->driver_private)
317			continue;
318
319		xf86CrtcDestroy(crtc);
320		i--;
321	}
322	sna->mode.num_fake = -1;
323	return false;
324}
325
326bool sna_mode_fake_init(struct sna *sna, int num_fake)
327{
328	bool ret;
329
330	if (num_fake == 0)
331		return true;
332
333	if (sna->mode.num_real_crtc == 0) {
334		xf86CrtcConfigInit(sna->scrn, &sna_mode_funcs);
335		xf86CrtcSetSizeRange(sna->scrn, 1, 1, INT16_MAX, INT16_MAX);
336	}
337
338	ret = true;
339	while (ret && num_fake--)
340		ret = add_fake_output(sna, false);
341	return ret;
342}
343